1
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
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$$\mathrm{K_2Cr_2O_7}$$ paper acidified with dilute $$\mathrm{H_2SO_4}$$ turns green when exposed to :

A
Sulphur dioxide
B
Sulphur trioxide
C
Hydrogen sulphide
D
Carbon dioxide
2
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which will undergo deprotonation most readily in the basic medium?

JEE Main 2023 (Online) 24th January Evening Shift Chemistry - Basics of Organic Chemistry Question 76 English

A
a only
B
Both a and c
C
c only
D
b only
3
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following cannot be explained by crystal field theory?

A
The order of spectrochemical series
B
Stability of metal complexes
C
Magnetic properties of transition metal complexes
D
Colour of metal complexes
4
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Correct statement is :

A
An average human being consumes more food than air
B
An average human being consumes 100 times more air than food
C
An average human being consumes nearly 15 times more air than food
D
An average human being consumes equal amount of food and air
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